https://www.w3.org/Bugs/Public/show_bug.cgi?id=20689
Bug ID: 20689
Summary: Specify how CDM should indicate successful completion
with no message for server
Classification: Unclassified
Product: HTML WG
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P3
Component: Encrypted Media Extensions
Assignee: adrianba@microsoft.com
Reporter: ddorwin@google.com
QA Contact: public-html-bugzilla@w3.org
CC: mike@w3.org, public-html-media@w3.org
Some key systems may wish to indicate "the CDM did what the app asked but has
nothing to send to the server". This may also be an indication that a
MediaKeySession has been initialized and is ready for use.
The keyadded event currently serves this purpose in a specific case. We could
generalize it (option #3 in bug 20688).
Otherwise, we may want to define a way to indicate "the CDM did what the app
asked but has nothing to send to the server". If not keyadded (or its
successor), keymessage along with an "empty" message attribute makes sense.
We would then need to decide whether "empty" is an empty array or null. The
former seems less likely to cause problems with apps that don't consider this
case.
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